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A NULL pointer dereference vulnerability existed in the Linux kernel's w83791d hardware monitoring (hwmon) driver. The issue was triggered when the driver read a specific value from the device, satisfying the condition (val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7)), which could result in a NULL pointer dereference due to the unnecessary lm75[] structure field. The vulnerability was introduced after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients().
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Linux kernel W83791D hardware-monitor driver NULL-pointer dereference flaw.
A Linux kernel w83791d hardware-monitoring driver NULL-pointer-dereference flaw that can cause a kernel crash.
A Linux kernel hwmon w83791d driver NULL-pointer-dereference vulnerability, resolved by removing an unnecessary structure field. The referenced automated assessment characterizes its approximate impact as moderate.
A Linux kernel hwmon w83791d driver NULL-pointer dereference caused by an obsolete lm75[] field after device-handling updates. A local attacker with privileges could trigger a system crash/denial of service; Red Hat rates its impact Moderate.
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